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a54bc198b1
* miscfuncs.cc (struct pthread_wrapper_arg): Add member guardsize.
(pthread_wrapper): Set thread stack guarantee according to guardsize.
Tweak assembler code so that $rax/$eax is not required by GCC to
prepare the wrapper_arg value.
(CygwinCreateThread): Fix deadzone handling. Drop setting a "POSIX"
guardpage (aka page w/ PAGE_NOACCESS). Always use Windows guard
pages instead. On post-XP systems (providing SetThreadStackGuarantee)
always set up stack Windows like with reserved/commited areas and
movable guard pages. Only on XP set up stack fully commited if the
guardpage size is not the default system guardpage size.
Fill out pthread_wrapper_arg::guardsize. Improve comments.
* resource.cc: Implement RSTACK_LIMIT Linux-like.
(DEFAULT_STACKSIZE): New macro.
(DEFAULT_STACKGUARD): Ditto.
(rlimit_stack_guard): New muto.
(rlimit_stack): New global variable holding current RSTACK_LIMIT values.
(__set_rlimit_stack): Set rlimit_stack under lock.
(__get_rlimit_stack): Initialize rlimit_stack from executable header
and return rlimit_stack values under lock.
(get_rlimit_stack): Filtering function to return useful default
stacksize from rlimit_stack.rlim_cur value.
(getrlimit): Call __get_rlimit_stack in RLIMIT_STACK case.
(setrlimit): Call __set_rlimit_stack in RLIMIT_STACK case.
* thread.cc (pthread::create): Fetch default stacksize calling
get_rlimit_stack.
(pthread_attr::pthread_attr): Fetch default guardsize calling
wincap.def_guard_page_size.
(pthread_attr_getstacksize): Fetch default stacksize calling
get_rlimit_stack.
* thread.h (PTHREAD_DEFAULT_STACKSIZE): Remove.
(PTHREAD_DEFAULT_GUARDSIZE): Remove.
(get_rlimit_stack): Declare.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
36 lines
1.1 KiB
Plaintext
36 lines
1.1 KiB
Plaintext
What's new:
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-----------
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- Handle pthread stacksizes as in GLibc: Default to RLIMIT_STACK resource.
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Allow to set RLIMIT_STACK via setrlimit. Default RLIMIT_STACK to value
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from executable header as described on
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https://msdn.microsoft.com/en-us/library/windows/desktop/ms686774.aspx
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Default stacksize to 2 Megs in case RLIMIT_STACK is set to RLIM_INFINITY.
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- First cut of an implementation to allow signal handlers running on an
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alternate signal stack.
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- New API sigaltstack, plus definitions for SA_ONSTACK, SS_ONSTACK, SS_DISABLE,
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MINSIGSTKSZ, SIGSTKSZ.
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- New API: sethostname.
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What changed:
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-------------
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Bug Fixes
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---------
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- Enable non-SA_RESTART behaviour on threads other than main thread.
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Addresses: https://cygwin.com/ml/cygwin/2015-06/msg00260.html
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- Try to handle concurrent close on socket more gracefully
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Addresses: https://cygwin.com/ml/cygwin/2015-06/msg00235.html
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- Fix fork failing after the parent recovered from a stack overflow.
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Addresses: https://cygwin.com/ml/cygwin/2015-06/msg00384.html
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- Fix a crash on 64 bit XP/2003 when opening /proc/$PID/maps.
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